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densk [106]
3 years ago
11

HELP QUICK Remove grouping symbols and combine like terms. 4a2 - 3[2b - 3b(b - 1)]

Mathematics
2 answers:
kvasek [131]3 years ago
8 0
Answer:
4a^2 - 15b + 9b^2

Step by step explanation:
makkiz [27]3 years ago
3 0

Answer:

4a^{2}  + 9b^{2}  + 3b

Step-by-step explanation:

Distributive Property

4a^2 - 3(2b - 3b^{2}   +  3b)

Distributive Property

{4a}^{2}  - 6b  + 9b^{2}  + 9b

Combine Like Terms

4a^{2}  + 9b^{2}  + 3b

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Answer:

the answer is 112

Step-by-step explanation:

901-789=112

4 0
3 years ago
Alejandro bought $3.50 worth of pencils and erasers at the school store. Pencils cost $0.50 apiece, and erasers cost $0.75 apiec
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Step-by-step explanation:

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5 0
3 years ago
Find the sum of 12a + 7b, −6a − 9, and 14a − 12b.
Ivan
The answer is:  [A]:  " 20a − 5b − 9 " .
______________________________________
Explanation:
_______________________________________________
  (12a <span>+ 7b) + (−6a − 9) + (14a − 12b) =
 
   12a </span><span>+ 7b  +  1(−6a − 9) + 1(14a − 12b) =
</span>    
   12a + 7b + (1*-6a) + (1*-9) + (1*14a) + (1* -12b) =
      
    12a + 7b − 6a − 9 + 14a − 12b =  ?

Combine the "like terms:

12a − 6a  + 14a = 20a ; 

7b − 12b =  - 5b ;

and then we have "-9" ;
_____________________________________________________
So, write as:   " 20a − 5b − 9 " ;  which is:  Answer choice:  [A].
______________________________________________________
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